#firstID {
    width: auto;
}

body {
    padding: 11px;
    background: #ffffff url(https://nonexistentfandomsfandom.neocities.org/backgrounds/salmon.png) center center/auto repeat fixed;
     font-family: 'GradoGradooNF';
}

h1 {
    size: 32px;
    text-align: center;
}

div {
    display: block;
    position: relative;
    width: auto;
}

#main {
    padding-left: 8%;
}

.marquisDivider {
    border-top: 2px dashed;
    width: 100%;
}

#leftSidebar {
    display: block;
    float: left;
    margin: 10px 15px 10px;
    width: 300px;
    
}

#mainContent {
    display: block;
    float: left;
    margin: 10px 15px 19px;
    width: auto;
}

#rightSidebar {
    display: block;
    float: left;
    margin: 10px 15px 10px;
    width: 300px;
    
}

.clear {
    clear: both;
}

.content {
    display: block;
    position: relative;
    margin: 15px;
    border: 20px solid transparent;
    border-image: url('https://eudaiimoniiia.neocities.org/index_resources/ivorylacelarge.png') 34 round;
    border-image-outset: 17px; 
    width: 450px;
    height: auto;
    background-color: #F38181;
    
}

.sidebarContent {
    display: block;
    position: relative;
    margin: 15px;
    border: 20px solid transparent;
    border-image: url('https://eudaiimoniiia.neocities.org/index_resources/ivorylacelarge.png') 34 round;
    border-image-outset: 17px; 
    width: auto;
    height: auto;
    background-color: #F38181;
}

.navBar {
    display: block;
    position: relative;
    margin: 15px;
    border: 20px solid transparent;
    border-image: url('https://eudaiimoniiia.neocities.org/index_resources/ivorylacelarge.png') 34 round;
    border-image-outset: 17px; 
    width: auto;
    height: auto;
    background-color: #F38181;
}

p { 
  font-family: 'GradoGradooNF';
  color: #762E39;
  }
  
a:link { color: #7D2A3B; }
a:visited { color: #42111B; }

@font-face {
  font-family: "GradoGradooNF";
  src: url("https://eudaiimoniiia.neocities.org/GradoGradooNF.ttf");
}
/* 

Feel free to add in all the rest of the CSS styling above or below, I would suggest below since CSS code cascades.
Just make sure all of the classes are included,
Hopefully this should be a good starter / example for a layout like you wanted, if there are any problems with how I wrote out the
code hypothetically, please just let me know and I will be more than happy to work it out with you :)

Classes are called in CSS using a period in front of the class name, you can set it up by doing
div.content for example, or you could do just .content {code here}. The same works for IDs, but using pound signs instead of periods!

*?