html, body {
    margin: 0;
    padding: 0;
    background-color: var(--body-bg);
    font-family: var(--font-family);
}

:root {
    --font-family: 'Karla', sans-serif;
    --body-bg: #1E1F25;
    --btn-bg: #000;
    --btn-color: #cbcbcb;
    --btn-color-hover: #fff;
    --grad-color1: #eeaf61;
    --grad-color2: #fb9062;
    --grad-color3: #ee5d6c;
    --grad-color4: #ce4993;
    --grad-color5: #6a0d83;
}

.container{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.button-border{
    background: linear-gradient(115deg, #eeaf61, #fb9062, #ee5d6c, #ce4993, #6a0d83);
    padding: 2px;
    border-radius: 30px;
}

.button{
    border: none;
    background: var(--btn-bg);
    color: var(--btn-color);
    padding: 1em 1.5em;
    font-family: inherit;
    letter-spacing: .1em;
    border-radius: 30px;
    
}

.button-border:hover{
    background: linear-gradient(230deg, #eeaf61, #fb9062, #ee5d6c, #ce4993, #6a0d83);
}

.button-border:hover .button{
    color: var(--btn-color-hover);
    padding: 1.1em 1.6em;
}