/*CSS RESET*/
* {
    margin: 0;
    padding: 0;
}

ul {
    display: block;
    display: flex;
    align-items: center;
}

nav li {
    list-style-type: none;
}

nav ul li {
    margin-right: 5%;
    margin-left: 5%;
}

nav ul li a {
    text-decoration: none;
    text-align: center;
}

main {
    display: flex;
    flex-direction: column;
}

.flex-col {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.row-two {
    display: flex;
    justify-content: space-between;
}

.container {
    height: 600px;
    width: 100%;
    display: flex;
}

.h-15 {
    height: 15%;
}

.h-25 {
    height: calc(25% - 6.5px)
}

.h-33 {
    height: calc(33% - 4px)
}

.h-50 {
    height: calc(50% - 5px)
}

.h-85 {
    height: calc(85% - 10px)
}

.h-100 {
    height: 100%;
}

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
    .box-color {
        background-color: tomato;
    }

    .space-x {
        height: 10px;
    }

    .space-y {
        width: 10px;
        height: 100%;
    }

    .col-xs-1 {
        width: 8.33%;
    }

    .col-xs-2 {
        width: 16.66%;
    }

    .col-xs-3 {
        width: 25%;
    }

    .col-xs-4 {
        width: 33.33%;
    }

    .col-xs-5 {
        width: 41.66%;
    }

    .col-xs-6 {
        width: 50%;
    }

    .col-xs-7 {
        width: 58.33%;
    }

    .col-xs-8 {
        width: 66.66%;
    }

    .col-xs-9 {
        width: 75%;
    }

    .col-xs-10 {
        width: 83.33%;
    }

    .col-xs-11 {
        width: 91.66%;
    }

    .col-xs-12 {
        width: 100%;
    }
}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
    .box-color {
        background-color: tomato;
    }

    .space-x {
        height: calc(150px * 0.05)
    }

    .space-y {
        width: calc(150px * 0.05)
    }

    .col-sm-1 {
        width: 8.33%;
    }

    .col-sm-2 {
        width: 16.66%;
    }

    .col-sm-3 {
        width: 25%;
    }

    .col-sm-4 {
        width: 33.33%;
    }

    .col-sm-5 {
        width: 41.66%;
    }

    .col-sm-6 {
        width: 50%;
    }

    .col-sm-7 {
        width: 58.33%;
    }

    .col-sm-8 {
        width: 66.66%;
    }

    .col-sm-9 {
        width: 75%;
    }

    .col-sm-10 {
        width: 83.33%;
    }

    .col-sm-11 {
        width: 91.66%;
    }

    .col-sm-12 {
        width: 100%;
    }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
    .box-color {
        background-color: tomato;
    }

    .space-x {
        height: calc(150px * 0.05)
    }

    .space-y {
        width: calc(150px * 0.05)
    }

    .col-md-1 {
        width: 8.33%;
    }

    .col-md-2 {
        width: 16.66%;
    }

    .col-md-3 {
        width: 25%;
    }

    .col-md-4 {
        width: 33.33%;
    }

    .col-md-5 {
        width: 41.66%;
    }

    .col-md-6 {
        width: 50%;
    }

    .col-md-7 {
        width: 58.33%;
    }

    .col-md-8 {
        width: 66.66%;
    }

    .col-md-9 {
        width: 75%;
    }

    .col-md-10 {
        width: 83.33%;
    }

    .col-md-11 {
        width: 91.66%;
    }

    .col-md-12 {
        width: 100%;
    }
}

/* 
/* 768-992px 
@media only screen and (max-width: 992px) {
    .box-color {
        background-color: tomato;
        height: 150px;
    }

    .space-x {
        height: calc(150px * 0.05)
    }

    .space-y {
        width: calc(150px * 0.05)
    }
    .col-md-1 {
        width: 8.33%;
    }

    .col-md-2 {
        width: 16.66%;
    }

    .col-md-3 {
        width: 25%;
    }

    .col-md-4 {
        width: 33.33%;
    }

    .col-md-5 {
        width: 41.66%;
    }

    .col-md-6 {
        width: 50%;
    }

    .col-md-7 {
        width: 58.33%;
    }

    .col-md-8 {
        width: 66.66%;
    }

    .col-md-9 {
        width: 75%;
    }

    .col-md-10 {
        width: 83.33%;
    }

    .col-md-11 {
        width: 91.66%;
    }

    .col-md-12 {
        width: 100%;
    }
} */

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    .box-color {
        background-color: tomato;
    }

    .space-x {
        height: calc(150px * 0.05)
    }

    .space-y {
        width: calc(150px * 0.05)
    }

    .col-lg-1 {
        width: 8.33%;
    }

    .col-lg-2 {
        width: 16.66%;
    }

    .col-lg-3 {
        width: 25%;
    }

    .col-lg-4 {
        width: 33.33%;
    }

    .col-lg-5 {
        width: 41.66%;
    }

    .col-lg-6 {
        width: 50%;
    }

    .col-lg-7 {
        width: 58.33%;
    }

    .col-lg-8 {
        width: 66.66%;
    }

    .col-lg-9 {
        width: 75%;
    }

    .col-lg-10 {
        width: 83.33%;
    }

    .col-lg-11 {
        width: 91.66%;
    }

    .col-lg-12 {
        width: 100%;
    }
}