.tool_a{
    max-width: 20rem;
    width: 100%;
    border: 1px solid #d7deea;
    padding: 0.75rem;
    margin: auto;
    border-radius: 3px;
}

.night .tool_a{
    border: 1px solid #374151;
}

.tool_a button{
    height: 1.8rem;
    line-height: 1.8rem;
    width: 100%;
    border: 1px solid #01a0e9;
    background-color: #01a0e9;
    color: #fff;
    border-radius: 3px;
    margin-top: 0.75rem;
}

.res{
    max-width: 20rem;
    width: 100%;
    margin: 1rem auto 0 auto;
    display: none;
}

@media screen and (max-width: 1280px) {
    .res{
        max-width: 20rem;
        width: 100%;
        margin: 0.5rem auto 0 auto;
        display: none;
    }
}