#img_container, #controls_container {
        width: 100%;
        max-width: 1500px;
        margin: auto;
}

img {
        width: 100%;
}

#current_div {
        float: left;
        width: 70%;
        margin: 10px;
}

#next_div {
        width: 25%;
        float: left;
        margin: 10px;
}

h1 {
    font-size: 20px;
    font-weight: 300;
    margin-bottom: 0;
}

p {
        clear: both;
}

body {
    background: #3a393a;
    color: #efefef;
    font-family: sans-serif;
    #max-width: 500px;
}

input {
        width: 20px;
        font-size: 17px;
}

#count {
        float: right;
}

@media only screen and (max-width: 800px) {
        #current_div, #next_div {
                width: calc(100% - 20px) !important;
        }
}

.icon {
        width: 50px;
        filter: invert(88%) sepia(4%) saturate(15%) hue-rotate(18deg) brightness(92%) contrast(97%);
}

.icon:hover {
        cursor: pointer;
        filter: invert(100%) sepia(24%) saturate(1720%) hue-rotate(187deg) brightness(123%) contrast(87%);
}

.icon#first, .icon#last {
        width: 20px;
        margin-bottom: 10px;
}

button {
        margin: 0 10px 0 0;
}

button#white, button#black {
        float: right;
}

input[type='checkbox'] {
        font-size: 15px;
}

.presentation_text, .start, .stop {
        display: none;
}

.status_text {
        float: right;
}