.list-group{margin-bottom:20px}.list-group-item:hover{background:grey;cursor:pointer}.btn{margin:0 10px}.selected{background:orange}.correct{background:green}.incorrect{background:red}body{background-color:#313131;color:#c8c8c8;padding:20px}#app{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-align:center;color:#fff;margin-top:60px;padding:10px;border-radius:10px;border:2px solid orange}.my_container{width:80%;height:auto;display:block;margin:auto auto}.header-tabs b{color:orange}