index.scss

html, body {
    margin: 0px;
    padding: 0px;
    width: 100%;
    font-size: 20px;
}

a {
    color: rgb(61, 134, 245);
    text-decoration: none;

    &:hover, &:focus {
        color: rgb(15, 94, 212);
        text-decoration: underline;

    }
    &:active {
        color: rgb(15, 74, 163);

    }
    &:visited {
        color: rgb(163, 82, 15);
    }
}

.introduction {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.7)), url('img/2022_icpc.webp');
    background-size: cover;
    background-position: 20% 50%;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;

    .content {
        padding: 5rem 3rem 2.5rem 5rem;
        @media (max-width: 1024px) {
            padding: 4rem 2rem 2rem 3rem
        }
        @media (max-width: 640px) {
            padding: 3rem 1.5rem 15rem 2rem;
        }
        max-width: 75%;
        color: rgb(146, 146, 146);

        h1 {
            border-left: 0.25em white solid;
            padding: 0px 0px 0px 1.15em;
            margin: 0px 0px 1em 0px;
            font-size: 1.8rem;

            .head-letter {
                color: white;
            }
        }

        p {
            color: white;
        }

        p.links {
            margin-top: 1.5em;
            font-size: 1.15em;
            a {
                color: white;
                display: inline-block;
                margin-right: 0.75em;
            }
        }
    }
}

header {
    background:rgb(85, 85, 85);
    color: white;
    padding: 3em 0.7em;

    h2 {
        padding: 0px;
        margin: 0px;
        font-size: 1.5rem;
        text-align: center;
    }

    .icon {
        font-size: 1.2em;
    }
}

.activities {
    display: flex;
    flex-direction: column;
    .activity-row {
        display: flex;
        flex-direction: row;
        
        @media (min-width: 1025px) {
            &:nth-child(even) > .activity {
                flex-direction: row-reverse;
            }
        }

        @media (max-width: 1024px) {
            flex-direction: column;
        }

        .activity {
            flex: 1;
            display: flex;
            flex-direction: row;
            
            @media (max-width: 640px) {
                flex-direction: column;
                .image {
                    flex: initial !important;
                    height: min(15rem, 50vh);
                }
            }

            .description {
                flex: 1 1 0;
                padding: 2.5rem;

                h3  {
                    font-size: 1.5rem;
                    padding-left: 1rem;
                    border-left: 5px solid black;
                }
            }

            .image {
                flex: 2 1 0;
                background-size: cover;

                &#first-image {
                    background-image: url('img/2022_cosmos_camp.webp');
                }
                &#second-image {
                    background-image: url('img/2022_icpc_2.webp');
                    background-position-y: top;
                }
                &#third-image {
                    background-image: url('img/2022_cpc.webp');
                }
                &#fourth-image {
                    background-image: url('img/baekjon_scoreboard.webp');
                }
            }
        }
    }
}

.join-us {
    text-align: center;
    padding: 3em 1em;
    width: 100%;
    box-sizing: border-box;
    .contacts {
        margin-top: 1.5em;
        display: flex;
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
        gap: 2em;
        .contact {
            .icon {
                font-size: 2.5em;
                margin-bottom: 0.25em;
            }
            width: max-content;
        }
    }
}

footer {
    background-color: rgb(196, 196, 196);
    padding: 3rem 6rem;
    @media (max-width: 1024px) {
        padding: 2rem 4rem;
    }
    @media (max-width: 640px) {
        padding: 1rem 3rem;
    }
    color:rgb(56, 56, 56);
}