.header {
  text-align: center;
}
.header h1 {
  font-size: 200%;
  color: #333;
  margin-top: 30px;
}
.header p {
  font-size: 14px;
}

    @media only screen and (min-width: 641px) {
      .am-offcanvas {
        display: block;
        position: static;
        background: none;
      }

      .am-offcanvas-bar {
        position: static;
        width: auto;
        background: none;
        -webkit-transform: translate3d(0, 0, 0);
        -ms-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
      }
      .am-offcanvas-bar:after {
        content: none;
      }

    }

    @media only screen and (max-width: 640px) {
      .am-offcanvas-bar .am-nav>li>a {
        color:#ccc;
        border-radius: 0;
        border-top: 1px solid rgba(0,0,0,.3);
        box-shadow: inset 0 1px 0 rgba(255,255,255,.05)
      }

      .am-offcanvas-bar .am-nav>li>a:hover {
        background: #404040;
        color: #fff
      }

      .am-offcanvas-bar .am-nav>li.am-nav-header {
        color: #777;
        background: #404040;
        box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
        text-shadow: 0 1px 0 rgba(0,0,0,.5);
        border-top: 1px solid rgba(0,0,0,.3);
        font-weight: 400;
        font-size: 75%
      }

      .am-offcanvas-bar .am-nav>li.am-active>a {
        background: #1a1a1a;
        color: #fff;
        box-shadow: inset 0 1px 3px rgba(0,0,0,.3)
      }

      .am-offcanvas-bar .am-nav>li+li {
        margin-top: 0;
      }
    }

    .my-head {
      margin-top: 40px;
      text-align: center;
    }

    .my-button {
      position: fixed;
      top: 0;
      right: 0;
      border-radius: 0;
    }
    .my-sidebar {
      padding-right: 0;
      border-right: 1px solid #eeeeee;
    }

    .my-footer {
      border-top: 1px solid #eeeeee;
      padding: 10px 0;
      margin-top: 10px;
      text-align: center;
    }