body { background-color: #00d9ff52; justify-self: center; text-align: center; } .imagen_construccion { width: 45vw; border: 0.45vw solid #00aeff; border-radius: 2.5%; } #barra { background-color: blue; border-radius: 3px; border-color: blue; width: 60vw; height: 5px; justify-self: center; margin: 25px; } #source_code_btn { background-color:cornflowerblue; border-width: 5px; border-radius: 3px; color:#ffffff; font-size: 1.5vw; transition: all 0.3s ease-in-out; } #source_code_btn:hover { font-size: 1.7vw; }