body{ background: #161618; } table{ width: 100%; border-collapse: collapse; } td{ border-style: groove; border-width: 2px; border-color: antiquewhite; background-color: #f5f7f6; } .header{ background: lightcyan !important; font-weight: bold; } .hidden{ display: none; } .information{ margin-top: 8px; font-style: italic; color: #f5f7f6; } button{ height: 40px; width: 30%; margin: 20px; border: transparent; border-radius: 20px; background: aqua; font-weight: bold; transition-duration: 0.3s; } button:hover { background-color: #4CAF50; color: white; } .color-cell{ transition-duration: 0.3s; } .color-cell:hover{ opacity: 0.75; }