#content{position:relative;width:100%;height:100%}.choice{background-size:100%;display:flex;flex-wrap:wrap;position:absolute;left:50%;transform:translateX(-50%);border:solid;width:80%;height:50%}.christmas{background-image:url(../../images/christmas.jpg)}.winter{background-image:url(../../images/winter.jpg)}.halloween{background-image:url(../../images/halloween.jpg)}.summer{background-image:url(../../images/summer.jpg)}.easter{background-image:url(../../images/easter.jpg)}.factory{background-image:url(../../images/factory/background.jpg)}.letter{position:relative;background-color:rgba(255,255,255,.8);width:20%;height:10%;text-align:center}.link_letter{font-size:xx-large;position:absolute;top:50%;left:50%;transform:translateX(-50%) translateY(-50%)}