html, body {
    font-style: normal;
    font-family: monospace;

    padding: 0;
    margin: 0;
}

.title {
    margin-top: 0;
}

.inner-content {
    display: flex;
    justify-content: flex-start;
    gap: 10px;
}

.account {
    border-style: solid;
    border-color: black;
    flex-grow: 1;
}

.account__grid {
    border-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.account__title {
    background-color: black;
    color: white;
    padding: 3px 6px;
    margin-left: 7px;
}

.account__label {
    margin: 0 .5em 0 .5em;
    font-weight: bold;
    border-bottom-style: solid;
}

.account__amount {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    flex-direction: column;
}

.account__accounts {
    grid-column: 2 / 4;
    grid-row: 1;
    display: flex;
    flex-direction: column;
}

.account__deposit {
    grid-column: 1;
    grid-row: 2;
}

.account__withdraw {
    grid-column: 2;
    grid-row: 2;
}

.account__transfer {
    grid-column: 3;
    grid-row: 2;
}

.account__button {
    color: black;
    border-radius: 0;
    border-color: black;
    border-style: solid;
    border-width: .2em;
    padding: 1em;
    margin: .5em;
    background: linear-gradient(to top, darkgray, 20%, lightgray);
    box-shadow: 3px 3px 3px black;
}

.account__button:hover:enabled {
    background: linear-gradient(lightgray, darkgray);
}

.account__button:active:enabled {
    transform: translateY(3px);
}

.account__button:disabled {
    background: lightgray;
    color: darkgray;
}

.account__input {
    padding: 1em;
    color: black;
    margin: .5em;
    background-color: #eeeeee;
    border-radius: 0;
    border-color: black;
    border-style: solid;
    border-width: .2em;
    box-shadow: 3px 3px 3px black;
}

.accounts {
    list-style-type: none;
    display: inline-block;
    min-width: min-content;
    margin: 0;
    padding: 0.5em;
    border-style: solid;
    border-color: black;
}

.accounts__item {
    border-style: solid;
    border-bottom-color: lightgray;
    border-width: 0 0 0.1em 0;
}

.accounts__item-selected {
    border-bottom-color: darkgray;
    background-color: #eeeeee;
    font-weight: bold;
}

.error {
    background: red;
    padding: 1em;
    color: white;
}

.content {
    padding: 1em;
    min-width: 370px;
}

@media (max-width: 1005px) {
    .inner-content {
        flex-direction: column;
    }
}

@media (max-width: 615px) {
    .accounts {
        display: block;
    }

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