.page{
    padding:0;
    /*overflow:hidden;*/
    float:right;
    margin-right:5px;
}
.page ul{
    text-align:center;
}
.page ul li{
    float:left;
    padding:0;
    list-style: none;
    font-size:20px; 
    margin-right: 5px;'
}
.page ul li button{
    margin:0 2px;
    border-width: 0;
    width: 80px;
    padding: 5px;
    border-radius: 5px;
    margin-right: 5px;
}
.page ul li span{
    display:inline-block;
    /*width:20px;*/
}
.page ul li input{
    width:70px;
    padding:3px;
    margin-right: 5px;
}
.btn_on{
    background-color:cornflowerblue;
    color:white;
}

@media screen and (max-width:420px){
    .page{
        margin:0;
    }
    .page ul li button{
        width:50px;
    }
}