.centered {
    position: absolute;
    top: 50%;
    left:50%;
    transform: translate(-50%,-50%);
}

.padded {
    padding: 5%;
}

body{
    background-color: lightgray;
    transition: all 0.5s ease 0s;
}

.correct{
    background-color: greenyellow;
}

.wrong{
    background-color: red;
}

.question-size{
    font-size: 1000%;
    color: white;
}

.answer-size{
    font-size: 200%;
    width: 100%;
    text-align: center;
}

.answer-form{
    height: 54px;
}

.help-size{
    font-size: 200%;
    color: white;
}

.hidden{
    display: none;
}

.navbar-text > a > img{
    max-height: 26px;
}

.glyphicon-spin {
    -webkit-animation: spin 1000ms infinite linear;
    animation: spin 1000ms infinite linear;
}
@-webkit-keyframes spin {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100% {
        -webkit-transform: rotate(359deg);
        transform: rotate(359deg);
    }
}
@keyframes spin {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100% {
        -webkit-transform: rotate(359deg);
        transform: rotate(359deg);
    }
}