.h1{
    text-align: center;

    color: aqua;
}
.box{
    width: 200px;
    height: 100px;
    border: 2px solid black;
    background-color: black;

    margin: auto;
    margin-top: 300px;
}
.c{
    color: red;
    text-align: center;
}
.e{
    color: red;
    text-align: center;
    margin-bottom: 40px;
}