.videoListBigBox{
    width: 1200px;
    padding: 20px 30px;
    margin: 100px auto 0;
}
.videoListBox{
    line-height:1.5;
    padding:20px 0;
}
.videoListBox dt{
    font-weight: bold;
    font-size: 18px;
    border-bottom: 1px solid #efefef;
    margin:0 17px;
    padding-bottom: 15px;
}
.videoListBox dd{
    display: inline-block;
    padding-top: 15px;
    margin-bottom: -15px;
}
.videoListBox dd a{
    text-align:center;
    min-width:124px;
    display: block;
    padding: 5px 10px;
    border: 1px solid #efefef;
    border-radius: 20px;
    box-shadow: 1px 2px 1px #f5f5f5;
}
.videoListBox dt img{ 
    display:inline-block;
    vertical-align:middle;
    margin-right: 10px;
}
.videoListBox dt span{
    display:inline-block;
    vertical-align:middle
}

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
    .videoListBigBox{width:100%;padding: 0px 0px;}
    .videoListBox dd a{margin: 8px 10px;min-width: 100px;}
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
    .videoListBigBox{width:100%}
    .videoListBox dd a{margin: 8px 12px;}
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
    .videoListBigBox{width:100%}
    .videoListBox dd a{margin: 8px 17px;}
} 

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    .videoListBigBox{width:100%}
    .videoListBox dd a{margin: 8px 17px;}
} 

/* Extra large devices (large laptops and desktops, 1200px and up) */
@media only screen and (min-width: 1200px) {
    .videoListBigBox{width:1200px}
    .videoListBox dd a{margin: 8px 17px;}
}