.cat_container {
    display: inline-block;
    overflow: hidden;
}

.meta-data {
    font-family: 'Courier New', Courier, monospace;
    color: rgba(255, 255, 255, 0.5);
    top: calc(100% - 26px);
    position: absolute;
    font-size: 18px;
}

.control {
	background-color: rgba(255, 255, 255, 0.1);
    transition: background-color 250ms;
	justify-content: center;
	padding-bottom: 0.4rem;
	top: calc(50% - 2rem);
	align-items: center;
	position: absolute;
	user-select: none;
	font-size: 2.5rem;
}

.control:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.screen {
    position: absolute;
    height: 100%;
    width: 100%;
    left: 0;
    top: 0;
}

.sq-lg {
    width: 15rem;
    height: 15rem;
}

.card {
    position: relative;
    user-select: none;
    height: 50%;
    width: 50%;
}

#index_indicator {
    right: 8px;
}

#lang_indicator {
    left: 8px;
}

#control_back {
    left: calc(20% - 2rem);
}

#control_next {
    left: calc(80% - 2rem);
}

#quiet_btn {
    font-family: 'Courier New', Courier, monospace;
    color: rgba(255, 255, 255, 0.5);
    background-color: transparent;
    transition: color 250ms;
    left: calc(50% - 100px);
    top: calc(100% - 26px);
    position: fixed;
    cursor: pointer;
    font-size: 17px;
    width: 200px;
    border: none;
}

#quiet_btn:hover {
    color: rgba(255, 255, 255, 0.65);
}

#etudier {
    position: fixed;
}

@media only screen and (max-device-width: 990px) {
    .cat_container {
        display: block;
        width: calc(100% - 3rem);
        overflow: visible;
    }

    .larger-btn {
        justify-content: center;
        left: calc(50% - 5rem);
        border-radius: 100rem;
        padding-bottom: 6px;
        font-weight: normal;
        align-items: center;
        position: absolute;
        font-size: 1.6rem;
        height: 4rem;
        width: 10rem;
    }

    .control {
        top: calc(85% - 2rem);
    }

    .sq-lg {
        width: 100%;
    }

    .card {
        height: 40%;
        width: 90%;
        margin-bottom: 6rem;
    }

    #control_back {
        left: calc(15% - 2rem);
    }

    #control_next {
        left: calc(85% - 2rem);
    }
}