*                       {   box-sizing: border-box;
                        }

body                    {   background-color: lightskyblue;

                            max-width: 1250px;
                            margin: auto;
                        }

#Grey_Background        {   background-color: lightgray;
                            box-shadow: 2px 2px 100px black;
                            padding-bottom: 10px;
                        }

#Width_1200px           {   display: flex;
                            flex-direction: column;
                            gap: 20px;
                            justify-content: center;
                            flex-wrap: no-wrap; 

                            max-width: 1200px;
                            margin: auto;
                        }

header                  {   background-image: url('header_image.png');
                            background-size: 1200px 100px;
                            background-repeat: no-repeat;
                            background-position: left;
                            background-clip: border-box;
                            background-color: darkgreen;
                        
                            padding: 30px 0px 0px 0px;
                            border: 2px solid lightyellow;
                            border-radius: 20px;
                            margin-top: 10px;  
                        
                            font-family: Lucinda Console, Arial, sans-serif;
                            font-style: normal;
                            font-size: 1.5em;
                            text-align: center;
                            color: gold;

                            flex: 1 1 100px;
                            box-shadow: 2px 2px 10px black;
                        }

main                    {   display: flex;
                            flex-direction: column;
                            gap: 20px;
                            justify-content: center;
                            flex-wrap: no-wrap;
                            flex: 1 1 auto;
                        }

#Past                   {   background-image: url('past_projects_image.png');
                            background-size: 1200px 200px;
                            background-repeat: no-repeat;
                            background-position: center-left;
                            background-clip: border-box;
                            background-color: darkgreen;
                            
                            padding-left: auto;
                            padding-right: auto;
                            padding-top: 75px;
                            border: 2px solid lightyellow;
                            border-radius: 20px;
                            
                            text-align: center;

                            flex: 1 1 200px;
                            box-shadow: 2px 2px 10px black;  
                        }

#New                    {   background-image: url('new_projects_image.png');
                            background-size: 1200px 200px;
                            background-repeat: no-repeat;
                            background-position: center-left;
                            background-clip: border-box;
                            background-color: darkgreen;

                            padding-left: auto;
                            padding-right: auto;
                            padding-top: 55px;
                            border: 2px solid lightyellow;
                            border-radius: 20px;
                            
                            text-align: center;

                            flex: 1 1 200px;
                            box-shadow: 2px 2px 10px black; 
                        }

#Curriculum_Vitae       {   background-image: url('cv_image.png');
                            background-size: 1200px 200px;
                            background-repeat: no-repeat;
                            background-position: center-left;
                            background-clip: border-box;
                            background-color: darkgreen;

                            padding-left: auto;
                            padding-right: auto;
                            padding-top: 75px;
                            border: 2px solid lightyellow;
                            border-radius: 20px;

                            text-align: center;

                            flex: 1 1 200px;
                            box-shadow: 2px 2px 10px black;
                        }

#Academic               {   background-image: url('academic.png');
                            background-size: 1200px 200px;
                            background-repeat: no-repeat;
                            background-position: center-left;
                            background-clip: border-box;
                            background-color: darkgreen;

                            padding-left: auto;
                            padding-right: auto;
                            padding-top: 85px;
                            border: 2px solid lightyellow;
                            border-radius: 20px;

                            text-align: center;

                            flex: 1 1 200px;
                            box-shadow: 2px 2px 10px black;
                        }

footer                  {   background-image: url('footer_image.png');
                            background-size: 1200px 100px;
                            background-repeat: no-repeat;
                            background-position: center-left;;
                            background-clip: border-box;
                            background-color: darkgreen;

                            padding: 60px 0px 0px;
                            border: 2px solid lightyellow;
                            border-radius: 20px;
                            
                            font-family: Lucinda Console, Arial, sans-serif;
                            font-style: italic;
                            font-size: 1em;
                            text-align: center;
                            color: gold;

                            flex: 1 1 100px;
                            box-shadow: 2px 2px 10px black; 
                        }

a.sublinks:link         {   background-color: transparent;
                            color: gold;
                            padding: 1px 1px 1px 1px;
                            border: 2px solid transparent;
                            
                            text-decoration: none;
                            text-align: center;
                            
                            display: inline-block;

                            font-family: Lucinda Console, Arial, sans-serif;
                            font-style: normal;
                            font-size: 1.25em;                                  
                        }

a.sublinks:visited      {   background-color: transparent;
                            color: gold;
                            padding: 1px 1px 1px 1px;
                            border: 2px solid transparent;
                            
                            text-decoration: none;
                            text-align: center;
                            
                            display: inline-block;

                            font-family: Lucinda Console, Arial, sans-serif;
                            font-style: normal;
                            font-size: 1.25em;                                 
                        }

a.sublinks:hover        {   background-color: transparent;
                            color: white;
                            padding: 1px 1px 1px 1px;
                            border: 2px solid transparent;
                            
                            text-decoration: none;
                            text-align: center;
                            
                            display: inline-block;

                            font-family: Lucinda Console, Arial, sans-serif;
                            font-style: normal;
                            font-size: 1.25em;                                  
                        }

a.sublinks:active       {   background-color: transparent;
                            color: white;
                            padding: 1px 1px 1px 1px;
                            border: 2px solid transparent;
                            
                            text-decoration: none;
                            text-align: center;
                            
                            display: inline-block;

                            font-family: Lucinda Console, Arial, sans-serif;
                            font-style: normal;
                            font-size: 1.25em;                                  
                        }