style.css

html,body { height: 100%; width: 100%; margin: 0; padding: 0; }
#topbar{
    width: 100%;
    height: 50px;       
    display: inline-block;
    background-color:teal;
    position: -webkit-sticky;
  position: sticky;
}

#logo{
    font-size: 32px;
    font-weight: bold;
    padding: 8px;
    width: 500px;
    float: left;
    color: white;
}
#buttoncontainer{
    padding: 5px;
    float: left;
    align-items: center;
    margin: 5px 129px;
    width: 226px;
}
.togglebutton{
    float: left;
    border: 2px solid black;
    border-right: none;
    padding: 4px;
    background-color: rgb(222, 135, 150);
    color: white;
}
.togglebutton:hover{
   background-color:rgb(140, 140, 180);
   cursor: pointer;
}


#html{
    border-top-left-radius: 6px ;
    border-bottom-left-radius: 6px;
}
#output{
    border: 2px solid black;
    border-top-right-radius: 6px ;
    border-bottom-right-radius: 6px;
}
.active{
    background-color: rgb(138, 138, 218);
}
#bodycontainer{
    display: block;
    padding: 0 10px;
    height: 90%;
}
textarea{
    resize: horizontal;
    float: left;
    height: 100%;
    background-color: blanchedalmond;
}
.panel{
    float:left;
    height: 100%;
}
.hidden{
    display: none;
}
#helpsection{
    margin: 10px auto;
    width: 40%;
    background-color: antiquewhite;
    padding: 10px;
    border-radius: 8px;
}
#helpbutton{
    float: right;
    margin:5px 5px ;
    font-size: 30px;
    font-weight: bold;
    border-radius: 25px;
    width: 40px;
    height: 40px;
    background-color: rgb(93, 93, 255);
    color: white;
}
#helpbutton:hover{
    cursor: pointer;
}

#outputpanel{
    resize: horizontal;
}