*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
h1.text-red {
    color:red;
}

h1{
    color:blue !important;
}

#btn{
    background-color: green;
}
p{
    color:rgb(55, 0, 255)
}

div{

    color:black;
}

body{
    background-color: aqua;
}
img{
    margin:30px;
}

.box{
    width: 100px;
    height: 100px;
    background-color: blue;
    margin:20px;
    color:aliceblue;
    padding: 20px;
border:5px solid red;
font-size: 20px;

}

button{
    margin:30px;
    width: 100px;
    height:80px;
}

input{
    margin:10px;
}