h1.heading{
    font-size:100px;
    background-image:url(https://th.bing.com/th/id/OIF.uqK5JzXi26FtikRMUh5XrQ?rs=1&pid=ImgDetMain);
    text-align:center;
}
img.hobbies{
    height:200px;
    width:200px;
    border:5px;
    border-color:LightBlue;
    border-style:solid;
}
img.hobbies:hover{
    height:300px;
    width:300px;
}
img.hobbies{
    transition:height 2s,width 2s;
}

p.link{
    text-align:center;
    border:1px;
}
body{
    background-color:#f2d9e3;
}
.introduction{
    text-align:center;
}
.books{
    width:200px;
    height:300px;
}
img.manga{
    width:300px;
    height:300px;
}
.footer{
    color:blue;
}
.weekly{
    text-align:center;
}
table.weekly{
    align-self:center;
}
iframe.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  height:600px;
}
table.center {
  margin-left: auto;
  margin-right: auto;
  width: 50%;
  border:"1";
}
}
#important{
    background-color:blue;
}
.happy{
    background-color:green;
}
.center {
  margin-left: auto;
  margin-right: auto;
}