button{
    position:absolute;
    width: 160px;;
    height: 30px;;
    text-align: center;
    padding-top: 7px;
    box-sizing: border-box;
    border-radius: 3px;
    border:none;
    background-color: red;
    color:white;
    left:calc(50vw - 80px);
    top:calc(50vh - 15px);

}
button:hover{
    background-color: rgb(207, 11, 11);;
}