main.css

body {
    font-family: 'Open Sans', sans-serif;
    padding-bottom: 15px;
}

a {
    cursor: pointer;
}

h1 {
    margin-top: 0;
}

.ace_editor {
    height: 320px;
}

tbody tr {
    cursor: pointer;
}

.jumbotron img {
    margin-top: -10px;
    margin-right: 10px;
}

.jumbotron p:last-child {
    margin-bottom: 0;
}

.run-output {
    margin-top: 15px;
}

.run-output pre {
    margin-bottom: 0;
}


/** LOADER **/

.loader,
.loader:before,
.loader:after {
    border-radius: 50%;
    width: 1.5em;
    height: 1.5em;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-animation: load 1s infinite ease-in-out;
    animation: load 1s infinite ease-in-out;
}

.loader {
    margin: 2em auto;
    font-size: 10px;
    position: relative;
    text-indent: -9999em;
    -webkit-transform: translateZ(0);
    -ms-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-animation-delay: -0.16s;
    animation-delay: -0.16s;
}

.loader:before {
    left: -3.5em;
    -webkit-animation-delay: -0.32s;
    animation-delay: -0.32s;
}

.loader:after {
    left: 3.5em;
}

.loader:before,
.loader:after {
    content: '';
    position: absolute;
    top: 0;
}

@-webkit-keyframes load {
    0%,
    80%,
    100% {
        box-shadow: 0 1.5em 0 -1.3em #ddd;
    }
    40% {
        box-shadow: 0 1.5em 0 0 #ddd;
    }
}

@keyframes load {
    0%,
    80%,
    100% {
        box-shadow: 0 1.5em 0 -1.3em #ddd;
    }
    40% {
        box-shadow: 0 1.5em 0 0 #ddd;
    }
}


/** STICKY FOOTER **/

html {
    position: relative;
    min-height: 100%;
}

body {
    margin-bottom: 60px;
}

.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 60px;
    background-color: #f5f5f5;
}

.footer p {
    margin: 20px 0;
    color: #777;
}