body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.productinfo {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 15px;
}

.productinfo label {
    align-self: center;
    font-weight: bold;
}

.productinfo input[type="text"],
.productinfo input[type="number"],
.productinfo select,
.productinfo textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: #f9f9f9;
    box-sizing: border-box;
    font-size: 16px;
}

.productinfo textarea {
    resize: vertical;
    height: 100px;
}

.productinfo input[type="file"] {
    border: none;
    padding: 5px;
    background-color: #f9f9f9;
}

.productinfo input[type="file"]:nth-child(odd) {
    margin-bottom: 10px;
}

.productinfo input[type="file"]:nth-child(even) {
    margin-bottom: 10px;
}

@media screen and (max-width: 600px) {
    .productinfo {
        grid-template-columns: 1fr;
    }

    .productinfo label {
        margin-bottom: 5px;
    }

    .productinfo input[type="file"] {
        margin-bottom: 15px;
    }
}

/*======================*/
ul, #myUL {
    list-style-type: none;
  }
  
#myUL {
    margin: 0;
    padding: 0;
}
  
.opisList {
    cursor: pointer;
    -webkit-user-select: none; 
    user-select: none;
}
  
.opisList::before {
    content: "\25B6";
    color: black;
    display: inline-block;
    margin-right: 6px;
}
  
.opisList-down::before {
    transform: rotate(90deg);  
}
  
.nested {
    display: none;
}
  
.active {
    display: block;
}

.toggle-input {
    margin-right: 10px; 
}

.text-field {
    display: none;
    margin-top: 5px; 
    margin-left: 20px; 
}

.toggle-input:checked + .text-field {
    display: inline-block;
}

.btn-new-product {
    padding: 20px 10px;
    border: none;
    width: 400px;
    margin-top: 40px;
    margin-left: 50%;
    transform: translateX(-50%);
}