    .container.custom-container {
      padding: 0 50px;
    }

.jumbotron {
      font-family: Arial;
      background-color: #000;
      color: #fff;
  }

.container {
    font-family: Arial;
    background-color: #000;
    color: #fff;
}


body {
  font-family: Arial;
  background-color: #000;
  color: #fff;
}

main {
  font-family: "Source Sans Pro", Verdana, Geneva, Tahoma, sans-serif;
    font-weight: 300;
    max-width: 720px;
    margin: 10px auto;
    background-color: #111;
    box-sizing: border-box;
    padding: 10px 32px;
}

textarea {
  width: 100%;
    height: 200px;
    font-family: Consolas, "Courier New", Courier, monospace;
    line-height: 1.2em;
    padding: 8px;
    box-sizing: border-box;
    font-size: 0.9em;
    border: 1px solid #fff;
    background-color: #000;
    color: #fff;
}


  p {
    display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    
}


input[type="button"] {
  background-color: #600;
  color: #fff;
  font-weight: bold;
  border: 3px solid #000;
  font-size: 140%;
  border-radius: 8px;
  margin: 8px auto;
}