style_reg.css

*{
    margin: 0px;
    padding: 0px;
}



.heading{
    align-items: center;
    margin-left: 20%;
    width: 800px;
    margin-top: 50px;
    text-align: center;
    background-color: grey;
    border-radius: 7px 7px 0px 0px;
}

.date{
    align-items: center;
    margin-left: 20%;
    width: 800px;
    text-align: center;
    background-color: grey;
}
input{
    font: 700;
    border: 3px solid;
    margin-top: -10px;
}

table{
    align-self: center;
    margin-left: 20%;
}

tr,th,td{
    padding: 10px;
    border: 1px solid;
    width: 136px;
    text-align: center;
}

#p{
    background-color: green;
    width: 25px;
}
#a{
    background-color: red;
    width: 25px;
}