body {
  font-family: "Arial", sans-serif;
  font-size: 16px;
  color: #333;
  line-height: 1.5;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 600px;
    padding:  20px;
    box-sizing: border-box;
}

h1{
    margin-bottom: 0.5em;
    font-weight: bold;
    text-align: center;
}

h2 {
    margin-top: 1em;
    margin-bottom: 0.5em;
    font-weight: bold;
    text-align: center;
}

p {
    margin: 0.5em 0;
    text-align: center;
}

.button-container {
    display: flex;
    justify-content: center;
    margin-bottom: 1em;
}

button {
    background-color: #1976D2;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 4px;
    transition-duration: 0.4s;
    font-weight: bold;
}

button:hover {
    background-color: rgb(26, 125, 224);
    box-shadow: 0px 0px 5px #888888;
}

button:active {
    background-color: #1976D2;
    box-shadow: inset 0px 0px 5px #888888;
}

.input-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 380px;
    margin-bottom: 0.5em;
    position: relative; /* この行を追加 */
}

label {
    text-align: right;
    flex-basis: 60.5%;
}

input[type="number"] {
    flex-basis: 30%;
}
#confirmation {
    background-color: #f9f9f9;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: center;
}

#feedbackBtn {
    padding: 7px 10px;
    font-size: 8px;
    background-color: rgb(120, 165, 237);
    box-shadow: 0px 0px 5px #888888;
}
#feedbackBtn:hover {
    background-color: rgb(26, 125, 224);
    box-shadow: 0px 0px 5px #888888;
}

#feedbackBtn:active {
    background-color: #1976D2;
    box-shadow: inset 0px 0px 5px #888888;
}

#yesBtn, #noBtn {
    font-size: 14px;

}

#dateInfo {
position: absolute;
top: 12px;
right: 8px;
font-size: 12px;
color: rgba(0, 0, 0, 0.5);
text-align: right;
z-index: 1000;
}

.info-icon {
    color: #007bff;
    cursor: pointer;
    position: absolute; /* この行を追加 */
    right: -19px; /* この行を追加 */  
  }
  
  .info-text {
    font-size: 10px;
    position: absolute;
    background-color: rgb(244, 241, 241);
    border: 2px solid #1976D2;
    border-radius: 10px;
    padding: 5px;
    margin-left: 200px;
    margin-top: 490px;
    width: 200px;
    text-align: left;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 10;
  }
  
  @media screen and (max-width: 480px) {
    .container {
        max-width: 100%;
    }
    .input-container {
        max-width: 80%;
    }
    label {
        flex-basis: 50%;
    }
    input[type="number"] {
        flex-basis: 40%;
    }
  .dateItem {
        font-size: 8px;
    }

    .info-text {
    margin-left: 100px;
}
}