h1 {
    text-align:center;
}
h2 {
    text-align:center;
}
img{
   text-align:center;
}
p {
    text-align:center;
}
ol {
    text-align:center;
}
li{
    text-align:center;
}
.run {
    Width:400px;
    Height:300px;
    display:block;
    margin:auto;
}

.center{
    table
}
body{
    Background-color:LightBlue;
}
iframe{
    Width:900px;
    Height:500px;
    display:block;
    margin:auto;
}

.us{
    display:block;
    margin:auto;
}
.table{
    display:block;
    margin:auto;
}
#whale:hover .caption{
    visibility:visible;
    display:block;
    margin:auto;
    Width:400px;
    Height:350px;
}

.pole {
    font-size:100px;
}
.caption{
    visibility:hidden;
    display:block;
    margin:auto;
    Width:400px;
    Height:350px;
}
.run{
    transition: transform .2s;
    border-radius: 10px;
    border: 1px solid black;
    display:block;
    margin:auto;
}
.run:hover{
    transform:scale(1.5);
}