.tablet-border {
    /*border: solid 30px black;
    border-radius: 4px;
    width: 640px;
    height: 389px;*/
	border: solid 10px black;
    background-color: gray;
}

.tablet-screen {
    width: 640px; 
    height: 389px;
}

.previous-button {
    position: absolute;
    top: 280px;
    /*left: 50px;*/
	left: 15px;
    background-color: rgba(107, 82, 82, 0.63);
    color: white;
    border: none;
    width: 50px;
    height: 30px;
}

.next-button {
    position: absolute;
    top: 280px;
    left: 640px;
    background-color: rgba(107, 82, 82, 0.63);
    color: white;
    border: none;
    width: 50px;
    height: 30px;
}