.box {
    height: 105px;
    box-sizing: border-box;
    border-radius: 4px;
    color: #bbc3c5;
    background: #596268;
    padding: 20px;
    max-width: 500px;
    button {
        float: right;
        box-sizing: border-box;
        border: none;
        display: inline-block;
        text-align: center;
        cursor: pointer;
        background: #e5e7e8;
        text-decoration: none;
        border-radius: 4px;
        height: 65px;
        width: 65px;
        line-height: 65px;
        padding: 0;
    }
    button:hover {
        background: #bbc3c5;
    }
}

.container {
    box-sizing: border-box;
    position: relative;
    z-index: 1;
}

.field {
    display: inline;
    input {
        border: 1px solid #909090;
        border-radius: 4px;
        height: 65px;
        outline: 0 none;
        padding: 10px;
        width: 370px;
        font-size: 14px;
        line-height: 14px;
        box-sizing: border-box;
    }
}

.box {
    height: 105px;
    box-sizing: border-box;
    border-radius: 4px;
    color: #bbc3c5;
    background: #596268;
    padding: 20px;
    max-width: 500px;
    button {
        float: right;
        box-sizing: border-box;
        border: none;
        display: inline-block;
        text-align: center;
        cursor: pointer;
        background: #e5e7e8;
        text-decoration: none;
        border-radius: 4px;
        height: 65px;
        width: 65px;
        line-height: 65px;
        padding: 0;
    }
    button:hover {
        background: #bbc3c5;
    }
    button:focus {
        outline: none;
    }
}

.container {
    box-sizing: border-box;
    position: relative;
    z-index: 1;
}

.field {
    display: inline;
    input {
        border: 1px solid #909090;
        border-radius: 4px;
        height: 65px;
        outline: 0 none;
        padding: 10px;
        width: 370px;
        font-size: 14px;
        line-height: 14px;
        box-sizing: border-box;
    }
}

Remove button outlien on focus
Remove button outlien on focus
