#main_div{
    display: flex;
}

.btn1{
    background-color:darkcyan;
    width: 120px;
    border-radius: 10px;
    border-style: none;
    transition-duration: 0.7s;
    font-weight: bold;
    color: white;
    padding: 3px;
    font-size: 17px;
}

.btn1:hover{
    background-color: cornflowerblue;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px, rgba(10, 37, 64, 0.35) 0px -2px 6px 0px inset;
}

#td6{
    text-align: center;
}