.aligncenter {
    text-align: center
  }  

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

  div.sticky {
  position: -webkit-sticky;
  position: sticky;
  top: 0;  
  }
 
img.imgleft50 {
    float: left;
    margin: 5px 20px 5px 5px;
    width: 50%;
    height: auto;
  } 

img.imgleft40 {
    float: left;
    margin: 5px 20px 5px 5px;
    width: 40%;
    height: auto;
  }

img.imgleft30 {
    float: left;
    margin: 5px 20px 5px 5px;
    width: 30%;
    height: auto;
  }   

img.imgleft20 {
    float: left;
    margin: 5px 20px 5px 5px;
    width: 20%;
    height: auto;
  }

img.imgleft10 {
    float: left;
    margin: 5px 20px 5px 5px;
    width: 10%;
    height: auto;
  }  
  
img.imgleft5 {
    float: left;
    margin: 5px 20px 5px 5px;
    width: 5%;
    height: auto;
  }  

img.imgleftfixed150px {
    float: left;
    margin: 5px 10px 5px 5px;
    width: 150px;
    height: auto;
  }    

img.imgleftfixed100px {
    float: left;
    margin: 5px 10px 5px 5px;
    width: 100px;
    height: auto;
  }    
    

img.imgright50 {
    float: right;
    margin: 5px 5px 5px 20px;
    width: 50%;
    height: auto;
  } 

img.imgright40 {
    float: right;
    margin: 5px 5px 5px 20px;
    width: 40%;
    height: auto;
  }

img.imgright30 {
    float: right;
    margin: 5px 5px 5px 20px;
    width: 30%;
    height: auto;
  }   

img.imgright20 {
    float: right;
    margin: 5px 5px 5px 20px;
    width: 20%;
    height: auto;
  }

.Mobile{display:none;}

@media(max-width: 600px){
  .Desktop{
    display:none;
  }
  .Mobile{
    display:block;
  }
}