body {
    color: white;
    font-family: 'Arial', sans-serif;
    background-color:   #1e1c25
;
    text-decoration: none;
    }

<style>

a:link{
  color: white;
  background-color: transparent;
  text-decoration: none !important;
}

a {
    color: white;
    text-decoration: none;
}

a:visited {
  color: white;
  background-color: transparent;
  text-decoration: none;
}

a:focus{
  color:  white;
background-color: transparent;
  text-decoration: none;
}

a:hover {
  color:coral;
  background-color: transparent;
  text-decoration: none;
}

a:active {
  color: white;
  background-color: transparent;
  text-decoration: none;
}

td { border-radius: 10px;
    border-color: snow;
    border-style:ridge; 
    background-color: #3e3851;
}
    
td.visibleBorder { border-width: 3px; }
td.hiddenBorder { 
    border-width: 0;
    background-color: transparent;
}



.navbar {
    background-color:  #3e3851;
    height: 75px;
    width: 1300px;
    margin: auto;
    font-family:serif;
    font-size: 50px;
    align-content: center;
    text-decoration: none;
    color: red;
    text-align: center;
    vertical-align: middle;
    line-height: 75px;
    border-radius: 50px;
}

.sidebar {
    background-color:  #3e3851 ;
    height: 280px;
    width: 210px;
    margin:inherit;
    font-family:serif;
    font-size: 35px;
    text-decoration: none;
    color: white;
    align-content: middle;
    text-align: center;
    vertical-align:text-top;
    line-height: 70px;
    border-radius: 35px;
}


.categorypicture {
    width: 300px;
    height: 300px;
    box-shadow: 2px 5px 5px rgb( 94, 76, 147 );
    padding: 10px;
    margin-bottom: 5;
    background-color:  #27213a
;
    border-radius: 10px;
}

.categorythumbnail {
    height:240px;
    border-radius: 15px;
}

.container1 {
    display:flex;
    padding-left: 200px;
    padding-right: 20px;
    padding-bottom: 5px;
    padding-top: 10px;
    }

.container2 {
    display:flex;
    padding-left: 20px;
    padding-right: 20px;
    padding-bottom: 5px;
    padding-top: 10px;
    }


</style>