* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}
body {
    padding: 100px;
    background-color: #f5f7fa;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#box {
    border-radius: 20px;
    width: 700px;
    background-color: #ffffff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px 30px;
    align-items: center;
    overflow-y: auto;
    -ms-overflow-style: none;  /* IE 10+ */
    scrollbar-width: none;
    max-height: 70vh;    
}
#box h1 {
    text-align: center;
    font-size: 40px;
    color: #333;
    margin-bottom: 20px;
}
#input-container {
    display: flex;
    margin-bottom: 20px;
}
#input {
    flex-grow: 1;
    padding: 15px;
    font-size: 30px;
    border-radius: 10px;
    border: 1px solid #ddd;
    margin: 20px 20px 20px 50px;
  
}
#submit {
    font-size: 16px;
    border-radius: 10px;
    padding: 10px 15px;
    background-color: #28a745;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}
#submit:hover {
    background-color: #218838;
}
#todo-list {
    list-style-type: none;
    padding: 0;
}
.todo-item {
    font-size: 30px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 10px;
    background-color: #ededed;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s;
    word-wrap: break-word;
    word-break: break-all;
}
.todo-item.completed {
    background-color: #d4edda;
    text-decoration: line-through;
    color: #155724;
}
.todo-text {
    flex-grow: 1;
    margin-bottom: 10px;
    width: 100%;
}
.button-container {
    display: flex;
    justify-content: flex-end;
    width: 100%;
}
.complete-button, .remove-button, .rename-button {
    border: none;
    border-radius: 5px;
    cursor: pointer;
    padding: 5px 10px;
    margin-left: 10px;
    transition: background-color 0.3s;
}
.complete-button {
    background-color: #007bff;
    color: white;
}
.complete-button:hover {
    background-color: #0056b3;
}
.remove-button {
    background-color: #dc3545;
    color: white;
}
.remove-button:hover {
    background-color: #c82333;
}
.rename-button {
    background-color: #ffc107;
    color: black;
}
.rename-button:hover {
    background-color: #e0a800;
}
.confetti {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 9999;
}
.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: rgba(255, 0, 0, 0.5);
    border-radius: 50%;
    opacity: 0.7;
    animation: confettiFall 1.5s ease-out infinite;
}
@keyframes confettiFall {
    0% {
        transform: translateY(0) rotate(0deg);
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
    }
}
@keyframes confettiFade {
    0%, 90% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}