body{
    margin: 0; font-family: Arial, Helvetica, sans-serif;
}

/*header begin */

#header-holder{
    background-image: url(../images/background/red-roof-with-clouds.jpg); height: 10px; padding: 200px; color: #fff; font-size: 36px; background-position-y: -1175px; text-shadow: 2px 2px #000; border-style: 1px solid;
}

.site-title{
   margin-top: -125px; height: 70px;
}

#site-holder{
    display: flex; padding: 8em; margin-top: -144px;
}

/*header einde */

/*menu begin*/

nav{
   top: 100px;
}
nav img{
    width: 25px;
}
nav ul li a{
    width: 200px;
}
nav ul{
    position: sticky;
    position: -webkit-sticky;
    top: 20px;
}

nav ul a {
    text-decoration: none;
    color: #000;
    background-color: aqua;
}

nav li{
    list-style: none;
}

nav li a{
    display: block;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    font-size: 30px;
    text-align: center;
    padding: 15px;
}

nav li #active{
    background-color: red;
    color: #fff; 
}

nav li a:hover:not(.active) {
    background-color: #000;
    color: #fff;
    transition:all 0.3s ease;
}

nav ul li > .sub-menu {
    position: absolute;
    right: -225px;
    width: 225px;
    top: 128px;
    visibility: hidden;
    opacity: 0;
    transition: all .4s ease-in-out;
  }
   
  nav ul li:hover > .sub-menu {
    visibility: visible;
    opacity: 1; font-size: 30px;
    
  }

  nav .button {
    background-position: 3%;
    background-repeat: no-repeat;
    background-size: 30px;
  }

  nav .home_btn{
    background-image: url(../images/icons/home.png);
  }

  nav .overons_btn{
    background-image: url(../images/icons/information-button.png);
  }

/*menu einde*/

#main-content  {
padding: 12px;
}

#main-content h2  {
    font-size: 38px;
    opacity: 0.5;
    }

    /*Projecten lijst begin*/
#project_items li{
    display: inline-block; margin: 1px; width: 241px; background-color: #00ffff; border-radius: 12px; border-style: solid; border-width: 1px;
}
#project_items li:hover{
    -webkit-transform: scale3d(1.1, 1.1, 1.1);
    transform: scale3d(0.2); transition: transform 0.3s ease-in; 
}
#project_items div{
    align-items: center; padding: 2%; 
}

#project_items img{
    
    width: 100%; align-items: center;
}

#project_items button{
    float: right;  font-weight: bold; font-size: 15px; margin-bottom: 5px; border-radius: 8px; 
}

#project_image_holder img{
    width: 100%; margin-top: 20px; border-radius: 15px;
}
 /*Projecten lijst einde*/

/*EMAIL begin*/

.input-field {
    height: 1.5em;
    width: 20em;
    font-size: 1.5em; border-radius: 0.2em;
   
}

.input-field-text{
    width: 100%; height: 250px;
}

  .input-label {
    font-size: 1.2em;
  }
  
  .input-button {
    color: white;
    font-size: 1.2em;
    padding: 0.5em;
    background-color: rgb(25, 128, 255);
    height: fit-content;
    width: fit-content;
    border-radius: 20%;
    margin-top: 0.5em;
    float: right;
  }

  /*EMAIL einde */

/*Footer begin */

  footer{
      padding: 8em; background-color: #00ffff; border-top-style: solid; text-align: left ;
  }

  footer li{
    list-style-type:none;
}
  #footer_content{
      display: flex;  
  }
  .footer_item1{
    flex-grow: 1;
  }
  .footer_item2{
      flex-grow: 2; 

  }
  .footer_item3{
    flex-grow: 1;
  }
  /*Footer einde */