krll/static/index/style.css

main {
    align-items: center;
    padding-top: 100px;
    display: flex;
    flex-direction:column;
}

.input-container {
    display: flex;
    justify-content: center;
    width: 500px;
}

@media screen and (max-width: 500px) {
    .input-container {
        width: 95%;
    }
}

.input-container input {
    font-size: 20px;
    box-sizing: border-box;
    padding: 6px;
    border: solid 1px var(--border-color);
    border-radius: 5px 0 0 5px;
    width: 100%;
    color: var(--text-color);
    background-color: var(--input-background-color);
}

.input-container input:focus {
    outline: none;
    border-color: var(--border-highlight-color);
}

.input-container button {
    font-size: 20px;
    box-sizing: border-box;
    border: none;
    border-radius: 0 5px 5px 0;
    color: var(--button-text-color);
    background-color: #6F59F5;
    padding: 0 10px;
}

.result-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 20px;
    font-size: 18px;
}

.result-container p {
    margin: 0;
}

.result-container #error {
    display: none;
}

.result-container #short-url {
    cursor: pointer;
    margin-top: 10px;
}

.result-container #copied {
    opacity: 0;
    margin-top: 10px;
    margin-bottom: 20px;
    font-size: 15px;
}