body { font-size: 14pt; font-family: SansSerif, serif; font-weight: 100; } h1 { font-size: 4.5em; } h2 { font-size: 3.7em; } h3 { font-size: 3em; } h4 { font-size: 2em; } h5 { font-size: 1.5em; } #general { margin-left: 3%; margin-top: 2%; } button { border: 0; background-color: darkslategrey; color: white; height: 1.5em; border-radius: 3px; font-size: 0.8em; } button:hover { background-color: #65A4A4; } button:active { background-color: #146B4D; } #btnEncrypt, #btnDecrypt { float:left; margin-top: 1%; height: 6%; width: 48.5%; margin-left: 1%; } #systemTB:active { background-color: #91DE93; transition: background-color 0.1s; }