html, body {
    height: 100%;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    width: 100%;
    margin: 0;
}

/* font */
.font-size-small {
    font-size: 14px;
}

.font-size-normal {
    font-size: 18px
}

.font-size-big {
    font-size: 22px;
}

/* flex */
.flex {
    display: flex;
}

.flex-row {
    flex-direction: row;
}

.flex-column {
    flex-direction: column;
}

/* positioning */
.flex-center {
    justify-content: center;
}

.flex-left {
    justify-content: left;
}

.flex-start {
    justify-content: start;
}

.flex-even {
    justify-content: space-evenly;
}

.flex-space {
    justify-content: space-between;
}

.start {
    align-items: start;
}

.center {
    align-items: center;
}

.end {
    align-items: end;
}

.text-left {
    text-align: left;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

/* spacing */
.margin-0 {
    margin: 0;
}

.margin-10 {
    margin: 10px;
}

.margin-sides-0 {
    margin-left: 0;
    margin-right: 0;
}

.margin-sides-10 {
    margin-left: 10px;
    margin-right: 10px;
}

.padding-0 {
    padding: 0;
}

.padding-10 {
    padding: 10px;
}

.full-width {
    width: 100%;
}

.min-width-10 {
    width: 10px;
    min-width: 10px;
}

.width-30 {
    width: 30%;
    max-width: 30%;
}

.width-250px {
    width: 250px;
    max-width: 250px;
}

.full-height {
    height: 100%;
    min-height: 100%;
}

.height-75 {
    height: 75%;
    min-height: 75%;
}

.height-70 {
    height: 70%;
    min-height: 70;
}

.bottom {
    margin-top: auto;
    margin-bottom: 0;
}

.block {
    display: block;
}

.text-break {
    line-break: normal;
}

/* colors */
.white {
    color: rgb(255, 255, 255);
}
.light-grey {
    color: rgb(110, 110, 110);
}

/* background-colors */
.bg-grey {
    background-color: rgb(78, 78, 78);
}

.bg-dark-grey {
    background-color: rgb(50, 50, 50);
}

.bg-red {
    background-color: red;
}

/* brightness */
.brightness-70 {
    filter: brightness(70);
}