body {
    font-family: 'Courier New', Courier, monospace;
    color: #55ffff;
    background-image: linear-gradient(black,teal);
    background-repeat: no-repeat;
}

footer {
    padding-top: 100%;

}

header {
    border : 1px;
    border-style: solid;
    border-color:  #55ffff;
    padding-bottom: 10px;
    
}

h1 {
    text-align: center;
}

h2 {
    text-align: center;
}
h3 {
    text-align: center;
}

h4 {
    text-align: center;
}

iframe {
    padding-left: 35%;
}

 ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}


button {
    text-align: left;
      width: 200%;
      height: 100%;
      padding-right: 90px;
    color: #55ffff;
    background-color: black;
    border : 1px;
    border-style: solid;
    border-color: #55ffff;
}