h1 {
    width: 170px;
    margin: 0 auto;
    background:
    text-align: center;
    padding: 0px
}

h1 {
    color: rgb(168, 55, 55);
    text-decoration:
}

h2 {
    width: 200px;
    margin: 0 auto;
    background:
    text-align: center;
    padding-top: 200px;
}

h2 {
    color: rgb(161, 49, 49);
    text-decoration:
}

h3 {
    width:400px;
    margin: 0 auto;
    background:
    text-align: center;
}

h3 {
    color: black;
    text-decoration:
}

body {
    background-color: rgba(255, 255, 255, 0);
    color: rgb(0, 0, 0);
    font-family:"Oswald", sans-serif;;
}

p{
    background-color:rgb(255, 255, 255);
    font-size: 20px;

    border: 10px solid;
    padding: 10px;
    margin: 50px;
    margin-left: 100px;
}
.banner {
    background-color: rgba(161, 52, 52, 0.336);
    font-size: 200;
    text-align: center;
    color:rgba(0, 0, 0, 0.534);
    border: 5px solid;
    padding: 20px;

}


details {
background-color: pink;
padding:10px;
}

summary {
    background-color: rgb(255, 255, 255);
    padding: 20px;
    cursor:pointer;
}
Summary:hover {
    background-color: rgb(255, 255, 255);
}

a {
    color: rgb(0, 0, 0);
    text-decoration: none;
}

a:hover {
    color:rgb(255, 255, 255);
    background-color: rgb(167, 67, 67);
}

div {
    background-color: lightblue
}

.test{
    background-color: aliceblue;
}

#special {
    background-color: hotpink;
}

.large{
    size: 300px;
}

.small{
    size: 200px;
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 50%;
  }

  
div {
  width: 100px;
  height: 100px;
  background-color: rgb(78, 78, 78);
  animation-name: 
example
;
  
animation-duration
: 20s;
}

@keyframes example {
  from {
background-color
: rgb(255, 255, 255);}
  to {
background-color
: rgb(71, 71, 71);}
}