.form_main {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        /* height: 59vh; */
}

form {
    margin: 5px;
    width: 100%;
}

input[type=text] {
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 80%;
    max-width: 500px;
    box-sizing: border-box;
    margin: 5px 0px;
}

input[type=number] {
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 80%;
    max-width: 500px;
    box-sizing: border-box;
    margin-bottom: 10px;
}

input[type=file] {
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 80%;
    max-width: 500px;
    box-sizing: border-box;
    margin: 5px 0px;
}

input[type=submit] {
    background-color: #007BFF;
    color: white;
    padding: 12px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: box-shadow 0.3s ease-out;
    font-weight: 600;
    font-family: Arial, Helvetica, sans-serif;
    min-width: 100px;
}

input[type=submit]:hover {
    background-color: #409cff;
    box-shadow: 0 5px 20px 0 rgba(0,0,0,.3);
}

/* 選取方塊樣式 */    
ul,li{
    padding: 0;
    margin: 0;
    list-style: none;
}

.clearfix::after{
    content: "";
    display: block;
    clear: both;
    visibility: hidden;
}

.radio-item {
    position: relative;
    width: 132px;
    height: 44px;
    line-height: 44px;
    float: none;
    display: inline-block;
    margin: 8px;
    font-weight: 600;
    font-family: Arial, Helvetica, sans-serif;
}

.radio-item input {
    width: 110px;
    height: 44px;
    opacity: 0;
    appearance: none;
    position: absolute;
    left: 0;
    top: 0;
}

.radio-item label {
    position: absolute;
    left: 0;
    top: 0;
    width: 120px;
    height: 36px;
    line-height: 36px;
    padding: 4px 6px;
    background-color: #EFEFEF;
    border-radius: 5px;
    z-index: -1;
    display: flex;
    align-items: center;
    transition: box-shadow 0.3s ease-out;
}

.radio-item label i {
    display: inline-block;
    margin-left: 6px;
}

.radio-item label i.disc {
    width: 8px;
    height: 8px;
    background: #333;
    border-radius: 100%;
}

.radio-item label i.active {
    width: 12px;
    height: 6px;
    border-left: 2px solid #FFFFFF;
    border-bottom: 2px solid #FFFFFF;
    transform: rotate(-45deg) translate(4pt, 2pt);
    display: none;

}

.radio-item span {
    margin-left: 26px;
    font-size: 9pt;
}

.radio-item input:checked + label {
    background: #007BFF;
    color: #FFFFFF;
    box-shadow: 0 5px 20px 0 rgba(0,0,0,.3);
}

.radio-item#income input:checked + label {
    background: #337736;
}

.radio-item#expense input:checked + label {
    background: #b12e2e;
}

.radio-item input:checked + label i.disc {
    display: none;
}

.radio-item input:checked + label i.active {
    display: block;
}

.radio-item input:checked + label + span {
    color: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
    .radio-item input:checked + label {
        color: #bdbdbd;
        box-shadow: 0 5px 20px 0 rgba(255, 255, 255, 0.5);
    }
    .radio-item label {
        background-color: #a8a8a8;
    }
    input[type=submit]:hover {
        box-shadow: 0 5px 20px 0 rgba(255, 255, 255, 0.5);
    }
}