panel.css

html, body {
    /*    height: 100%;*/
    margin: 15px 5px 5px 40px;
    /*    box-sizing: border-box;*/
    /*    overflow: hidden;*/
}

button {
    margin: 5px 20px 5px 0px;
    -webkit-appearance: none;
    border-radius: 2px;
    border: 1px solid #ddd;
    min-width: 50px;
    max-width: 100%;
    line-height: 30px;
    padding: 0 15px;
    display: inline-block;
    font-size: inherit;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    font-weight: normal;
    /*    width: 50px;*/
}

    button:hover:enabled {
        background-color: #f9f9f9;
        color: #111;
        border-color: #ccc;
        box-shadow: 0 1px 2px 0 rgba(0,0,0,.1);
        -webkit-box-shadow: 0 1px 2px 0 rgba(0,0,0,.1);
    }

    button:disabled {
        color: #ccc;
    }

    button:active:enabled {
        background: #ececec;
        color: #111;
        border-color: #ccc;
        box-shadow: none;
        -webkit-box-shadow: none;
    }

.container {
    /*    margin: 5px 5px 5px 5px;*/
    /*    width: 100%;*/
    /*    margin-left: 10px;*/
    /*    margin: 5px 5px 5px 5px;*/
    padding: 5px 5px 5px 5px;
    display: flex;
    align-items: center;
    width: 800px;
}

.label {
    flex-shrink: 0;
}

#div0 {
    width: 800px;
    margin: 5px 5px 5px 15px;
}

input {
    padding: 5px 15px 5px 15px;
    height: 28px;
    width: 120px;
    flex-grow: 1;
    border-radius: 6px;
    border-top-left-radius: 6px;
    border: 2px solid #ececec;
}

#keyword {
    /*    border-collapse: collapse;*/
    /*    border-spacing: 0;*/
    /*    display: inline-block;*/
    /*    background-color: #fff;*/
    /*    color: #666;*/
    /*    box-shadow: none;*/
    /*    list-style: none;*/
}

.inputdate {
    flex-grow: 0;
    width: 105px;
    flex-shrink: 0;
}

.title {
    white-space: nowrap;
    line-height: 2.5em;
    font-size: medium;
    margin: 5px 5px 5px 5px;
}

.keyword {
    color: #de0000;
    display: inline;
}

.content {
    /*    white-space: nowrap;*/
    margin: 5px 5px 5px 15px;
    line-height: 2.5em;
    font-size: small;
}

.content_child {
    display: inline;
}

a:hover {
    color: darkred;
    text-decoration: none;
}