body, html {
    height: 100%;
    margin: 0;
    font-family: 'Lato', 'Arial', sans-serif;
    font-size: 20px;
    font-weight: 300;
  }
  
.bg {
background-image: url("back.jpg");
height: 100%; 
background-position: center;
background-repeat: no-repeat;
background-size: cover;
background-attachment: fixed;
}

#logo{
    width: 200px;
    height: 200px;
}

h1{
    margin-top: 0;
    margin-bottom: 20px;
    color: white;
    font-size: 180%;
    word-spacing: 4px;
    letter-spacing: 1px;
}
.abc{
    text-transform: uppercase;
}
.top-button{
  background-color: rgba(200, 200, 200, 0);
  color: #f87c00;
  font-size: 20px;   
  padding: 8px 15px;
  cursor: pointer;
  border: 2px solid #f87c00;
  border-radius: 25px;
  text-align: center;
  transition: 0.3s;
  cursor: default;
}
.top-button:hover{
    background-color: #f87c00;
    color: white;
    font-size: 20px;
    padding: 8px 15px;
    border: none;
    cursor: pointer;
    border: 2px solid #f87c00;
    border-radius: 25px;
    text-align: center;
    cursor: default;
  }

  .top-button:active{
    background-color: #f85b00;
    color: white;
    font-size: 20px;
    padding: 8px 15px;
    border: none;
    cursor: pointer;
    border: 2px solid #f85b00;
    border-radius: 25px;
    text-align: center;
    cursor: default;
  }

.nestedsection{
    background-color: rgba(0, 0, 0, 0.5);
    height: 100%; 
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    
}
.inner-content{
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

hr{
    border: 1px solid #f87c00;
    background-color:#f87c00;
    width: 20%;
}

#ins{
    line-height: 145%;
    width: 70%;
    margin-left: 15%;
    color:#555555;
}

#table-content{
        content: "";
        display: table;
        clear: both;
        width: 90%;
    margin-left: 10%;
}

.column{
    float: left;
    width: 20%;
    padding: 10px;
    height: 300px;
}

h3{
    color: #555555;
}

.ff{
    color:#555555;
}

.top {
    position: fixed; 
    bottom: 20px; 
    right: 30px;
    z-index: 99; 
    outline: none; 
    background-color: rgba(200, 200, 200, 0);
  color: #f87c00;
  font-size: 20px;   
  cursor: pointer;
  border: 2px solid #f87c00;
    padding: 15px; 
    border-radius: 25px; 
    font-size: 18px; 
    text-decoration: none;
  }
.top:hover {
    border: 2px solid #f87c00;
    border-radius: 25px;
  }