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.border {
  border: 1px solid #ccc;
  border: 1px solid rgba(0, 0, 0, 0.15);
  -webkit-border-radius: 4px;
     -moz-border-radius: 4px;
          border-radius: 4px;
}

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using System;
using System.Globalization;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;

namespace MvcJson
{
    public class ConfigurableContractResolver: DefaultContractResolver
    {
        public bool UseCamelCase { get; set; }

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var settings =  new JsonSerializerSettings
{
    ContractResolver = new ConfigurableContractResolver()
}
JsonSerializer serializer = JsonSerializer.Create(settings);
serializer.Serialize(textWriter, valueToSerialize);

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img {
position: relative;
display: block;
content: "";
}

img:before {
display: block;
content: "";
position: absolute;

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html {
    background: #f6f6f6;
    padding: 24px;
    text-align: center;
}

a {
    border-radius: 4px;
    display: inline-block;

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html {
    background: #f6f6f6;
    padding: 24px;
    text-align: center;
}

a {
    border-radius: 4px;
    display: inline-block;

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function Model(){    
    this.selectedItems = ko.observableArray();
    this.selectNone = function () {
        this.selectedItems().length = 0;   
        this.selectedItems.valueHasMutated();
    }
    this.hasItemsSelected = ko.dependentObservable(function () {
        return this.selectedItems().length > 0;
    }, this);
}