:root{
    --background-color: #999999;
    --darker-background-color: #888888;
    --accent-color: #777777;
    --text-color: #000000;
    --navbar-hright: 80px;
    --body-text-color: #000000;
    --body-background-color: #dddddd;
}
*{
    margin: 0;
    padding: 0;
    font-size: 22px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
}
html{
    height: 100%;
}
body{
    height: 100%;
    color: var(--body-text-color);
    background: var(--body-background-color);
}
nav{
    height: var(--navbar-hright);
    background: var(--background-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
nav .logo{
    margin-left: 30px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 35px;
    font-variant: small-caps;
    text-decoration: none;

}
nav ul{
    height: 100%;
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    list-style: none;
}
nav li{
    height: 100%;
    width: 150px;
    text-align: center;
    position: relative;
}
nav li:hover{
    background: var(--accent-color);
}
nav ul a{
    height: 100%;
    width: 100%;

    display: flex;
    align-items: center;
    justify-content: center;

    text-decoration: none;
}
.dropdown{
    height: min-content;
    width: 200px;
    background: var(--background-color);

    display: none;
    flex-direction: column;

    position: absolute;
    left: 0;
    top: var(--navbar-hright);
}
.dropdown li{
    height: 70px;
    width: 100%;
}
.dropdown li a{
    justify-content: flex-start;
    padding-left: 30px;
    width: calc(100% - 30px);
}
nav li:hover .dropdown{
    display: flex;
}
nav input[type="checkbox"]{
    display: none;
}
.expandable_li{
    display: flex;
    justify-content: center;
    align-items: center;
}
.toggle_button{
    width: 30px;
    height: 23px;

    position: absolute;
    top: 25px;
    right: 25px;

    display: none;
    flex-direction: column;
    justify-content: space-between;
}
.bar{
    height: 4px;
    width: 100%;
    background: var(--text-color);
    border-radius: 100px;
}
@media(max-width: 850px) {
    .toggle_button{
        display: flex;
    }
    nav ul{
        height: min-content;
        width: 100%;
        background: var(--background-color);

        display: none;
        position: absolute;
        top: var(--navbar-hright);
    }
    nav li{
        height: min-content;
        width: 100%;
    }
    nav ul a{
        padding: 30px 0;
    }
    .expandable_li{
        display: block;
    }
    .expandable_li label{
        padding: 30px 0;
        cursor: pointer;
        display: block;
    }
    .expandable_li:hover .dropdown{
        display: none;
    }
    .expandable_li input[type="checkbox"]:checked ~ .dropdown{
        display: block;
    }
    .dropdown{
        position: static;
        width: 100%;
    }
    .dropdown li{
        padding: 0;
        display: block;
        position: static;
        background: var(--darker-background-color);
    }
    .dropdown li a{
        width: 100%;
        padding: 0;
        justify-content: center;
    }
    #toggle_button:checked ~ ul{
        display: block;
    }
}
/* ==================================== content ===========================  */



ul {
    display: flex;
    flex-wrap: wrap;
  }
  
  li {
    height: 40vh;
    flex-grow: 1;
  }
  
  li:last-child {
    // There's no science in using "10" here. In all my testing, this delivered the best results.
    flex-grow: 10;
  }
  
  img {
    max-height: 100%;
    min-width: 100%;
    object-fit: cover;
    vertical-align: bottom;
  }