body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    color: #333;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

.container {
    height: 100%;
    display: flex;
}

.canvas {
    background-color: #FFF;
}

#holder {
    display: flex;
    align-items: center;
    justify-content: center;
}

#toolbar {
    position: fixed;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    padding: 5px;
    width: 60px;
    background-color: #333;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    margin-left: 10px;
    padding-top: 20px;
    border-radius: 20px;
}

#toolbar * {
    margin-bottom: 8px;
}

#toolbar input[type="color"] {
    align-self: center;
}

#toolbar button,
#open,
.toggle {
    background-color: #444;
    border: none;
    border-radius: 50%;
    color: #fff;
    padding: 8px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

#toolbar button i {
    align-self: center;
    justify-self: center;
}

#toolbar button i,
#toolbar .toggle i {
    font-size: 20px;
}

#toolbar button:hover,
#open:hover,
.toggle:hover {
    background-color: #555;
    transform: scale(1.1);
}

#toolbar .toggle.selected {
    background-color: #e91e63;
    color: #fff;
}

#fileInputContainer {
    position: relative;
    width: 100%;
}

#fileInputContainer input[type="file"] {
    width: 100%;
    height: 40px;
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    cursor: pointer;
}

#fileInputContainer label {
    background-color: #444;
    border: none;
    border-radius: 50%;
    color: #fff;
    padding: 8px;
    text-align: center;
    display: block;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
}

#fileInputContainer label:hover {
    background-color: #555;
    transform: scale(1.1);
}