* {
  box-sizing: border-box;
  
}
.dropdownmenu {
          display: inline-block;
          position: relative;
          top: 3px;
          left: 8px;
          margin-top:10px;
          margin-bottom:10px;
        }
        .dropdownmenu span {
          padding: 10px;
          text-align: center;
          background-color:rgb(88, 87, 87);
          color:aquamarine;
          text-decoration: none;
        }
        .dropdownlinks {
          display: none;
          position: absolute;
          background-color: lightslategray;
          color: aquamarine;
          width: 310px;
          top: 10px; 
          border: thick solid rgb(88, 87, 87);
          text-align: left
        }
        .dropdownlinks a {
          display: block;
          text-decoration: none;
          color: black;
          padding: 8px;
          text-align: left;
        }
        .dropdownmenu
         span:hover, .dropdownlinks a:hover {
            background-color: rgb(88, 87, 87);
            color: aquamarine;
        }
        .dropdownmenu:hover .dropdownlinks {
          display: block;
        }
        .header {
          height: 100%; /* manually calculated header height through setting this to x%*/
          width: 100%;
          text-align: center;
          background-image:url("https://zettabytesofknowledge.neocities.org/mountainside%20house%20green%20forest.jpg");
        }
        .footer {
          height: 100%; /* manually calculated header height through setting this to x%*/
          width: 100%;
          text-align: center;
          background-image:url("http://classweb.riosalado.edu/jos2135141/CIS133DA_28743/Lesson13/earth-space-desktop.jpg");
        }
.body {
  background-image:url('https://zettabytesofknowledge.neocities.org/htmlbackgroundmysite2.JPG');background-repeat: repeat; background-size: 100%;
  font-family: sans-serif;
color:wheat;
}
.h1
{
  color: skyblue;
}

.wrapper {
          text-align: center;
          position: relative;
          width: 90%;
          margin-top:10px;
           
          margin: 10px auto;
          background-color: grey;
          border: thick solid #439ac2;
          font-family: sans-serif;
          font-size: 16px;
          color: limegreen;
          border-radius: 10px;
          padding-bottom: 10px;
          
        }
.card {
        box-shadow: 8px 4px 8px 0 rgba(0, 0, 0, 0.2);
        padding-left: 2px;
        padding-right: 2px;
        padding-top:5px;
        padding-bottom:5px;
        text-align: center;
        background-color: #439ac2;
        border: thick solid rgb(157, 157, 170);
        border-radius: 5px;
        border-width: 5px;
        margin-left: 10px;
    
}
/* Float columns side by side */
.column {
  float: left;
  width: 100%;
  padding: 0 10px;
}
/* Remove extra left and right margins, due to padding */
.row {margin: 0 -5px;}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}

.main {
 text-align: left;
padding-left: 20px;
padding-right: 20px;
          position: relative;
           width: 80%;   
          margin-top:10px;
          margin: 10px auto;
          background-color: grey;
          border: thick solid #439ac2;
          font-family: sans-serif;
          font-size: 16px;
          color: limegreen;
          border-radius: 10px;}
          
.container {
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.wrapper2 {
  padding: 10px;
  margin: 0 auto;
  width: 500px;
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);  
  
 
}
    .item {
    visibility: hidden;
    display: none; 
    }
    <div {
    min-height: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: flex-end;
    font-weight: bold;
    color: orange;
}
    &:after {
content: "";
    width: 10px;
    height: 4px;
    display: block;
    background: black;
    color: orange;
    margin-bottom: 4px;
    margin-left: 2px;
    animation-duration: 350ms;
    animation-name: fade;
    animation-direction: alternate;
    animation-iteration-count: infinite;
    }
  }
}

@keyframes fade {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}